JPS6428700A - Voice analyzer/synthesizer - Google Patents

Voice analyzer/synthesizer

Info

Publication number
JPS6428700A
JPS6428700A JP62184421A JP18442187A JPS6428700A JP S6428700 A JPS6428700 A JP S6428700A JP 62184421 A JP62184421 A JP 62184421A JP 18442187 A JP18442187 A JP 18442187A JP S6428700 A JPS6428700 A JP S6428700A
Authority
JP
Japan
Prior art keywords
amplitude
information
average
average amplitude
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62184421A
Other languages
Japanese (ja)
Other versions
JP2581696B2 (en
Inventor
Takashi Yato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP62184421A priority Critical patent/JP2581696B2/en
Publication of JPS6428700A publication Critical patent/JPS6428700A/en
Application granted granted Critical
Publication of JP2581696B2 publication Critical patent/JP2581696B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE: To considerablry reduce the information volume by encoding only average amplitude information of a channel signal calculated for each frame in a certain time section to send it to a synthesis part with respect to a channel component of about >=2kHz. CONSTITUTION: With respect to channels of high frequencies out of channels obtained by dividing the frequency of a voice signal into plural bands, only the frame average information is encoded. An average amplitude encoding part 14 consists of an absolute value circuit 41, an average amplitude calculator 42, an average amplitude encoder 43, etc., and a reproducing part 15 consists of an average amplitude decoder 45 and an amplitude interpolation circuit 47. An amplitude absolute value 41 is calculated from an input signal by the calculator 42 and is encoded to a logarithmic compression code by the encoder 43 and is sent to the reproducing part 15. Logarithmic expansion is performed in the decoder 45, and amplitude interpolation is performed for each sample by the circuit 47 to obtain amplitude information of each sample, and it is multiplied by the output signal of a white noise generator 48 by a means 49, and the result is outputted. Thus, the information volume is reduced.
JP62184421A 1987-07-23 1987-07-23 Speech analysis synthesizer Expired - Lifetime JP2581696B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62184421A JP2581696B2 (en) 1987-07-23 1987-07-23 Speech analysis synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62184421A JP2581696B2 (en) 1987-07-23 1987-07-23 Speech analysis synthesizer

Publications (2)

Publication Number Publication Date
JPS6428700A true JPS6428700A (en) 1989-01-31
JP2581696B2 JP2581696B2 (en) 1997-02-12

Family

ID=16152868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62184421A Expired - Lifetime JP2581696B2 (en) 1987-07-23 1987-07-23 Speech analysis synthesizer

Country Status (1)

Country Link
JP (1) JP2581696B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002032100A (en) * 2000-05-26 2002-01-31 Lucent Technol Inc How to encode audio signals
JP2004085604A (en) * 2002-08-22 2004-03-18 Alpine Electronics Inc Digital audio signal transmission method and audio system
WO2004044891A1 (en) * 2002-11-13 2004-05-27 Sony Corporation Music information encoding device and method, and music information decoding device and method
JP2008090178A (en) * 2006-10-04 2008-04-17 Sharp Corp Signal processing method, signal processing apparatus, and program
JP2008522214A (en) * 2004-11-29 2008-06-26 ナショナル ユニバーシティ オブ シンガポール Perceptually conscious low-power audio decoder for portable devices
JP2018146652A (en) * 2017-03-02 2018-09-20 学校法人東北学院 Audio coding / decoding method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211797A (en) * 1982-06-04 1983-12-09 日本電気株式会社 Band split type vocoder
JPS59129900A (en) * 1983-01-18 1984-07-26 日本電信電話株式会社 Band division coding system
JPS6027459A (en) * 1983-07-22 1985-02-12 Sumitomo Metal Ind Ltd Device for preventing corrosion of current-conducting roll and billet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211797A (en) * 1982-06-04 1983-12-09 日本電気株式会社 Band split type vocoder
JPS59129900A (en) * 1983-01-18 1984-07-26 日本電信電話株式会社 Band division coding system
JPS6027459A (en) * 1983-07-22 1985-02-12 Sumitomo Metal Ind Ltd Device for preventing corrosion of current-conducting roll and billet

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002032100A (en) * 2000-05-26 2002-01-31 Lucent Technol Inc How to encode audio signals
JP2004085604A (en) * 2002-08-22 2004-03-18 Alpine Electronics Inc Digital audio signal transmission method and audio system
WO2004044891A1 (en) * 2002-11-13 2004-05-27 Sony Corporation Music information encoding device and method, and music information decoding device and method
US7583804B2 (en) 2002-11-13 2009-09-01 Sony Corporation Music information encoding/decoding device and method
JP2008522214A (en) * 2004-11-29 2008-06-26 ナショナル ユニバーシティ オブ シンガポール Perceptually conscious low-power audio decoder for portable devices
JP2008090178A (en) * 2006-10-04 2008-04-17 Sharp Corp Signal processing method, signal processing apparatus, and program
JP2018146652A (en) * 2017-03-02 2018-09-20 学校法人東北学院 Audio coding / decoding method

Also Published As

Publication number Publication date
JP2581696B2 (en) 1997-02-12

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